Powder pump



FIG. 1 is a first perspective view of the powder pump bearing the design;

FIG. 2 is a second perspective view of the powder pump of FIG. 1;

FIG. 3 is a left side view of the powder pump of FIG. 1;

FIG. 4 is a right side view of the powder pump of FIG. 1;

FIG. 5 is a top view of the powder pump of FIG. 1; and,

FIG. 6 is a bottom view of the powder pump of FIG. 1. 

CLAIM The ornamental design for a powder pump, as shown and described. 